You said the other day your compressor came unplugged. If that's the case, I'm guessing it's a little 110V or maybe 110V/220V 33 gallon upright oilless compressor. By the time you've sprayed for a minute with that gun, your compressor is already behind in air delivery and you're probably not getting full atomization. See what your SCFM or CFM rating is on your compressor. you need probably 14CFM for those guns. if your compressor is less than that, you'll have some of the problems you mentioned.